Some good info that still applies is on last year's thread: http://driveonwood.com/forum/80
To answer specifics: camping on-site is very cheap (Ron may know the price); nice clean shower/bathhouse facilities. Hotels are available in the next town.
Ron brought a gas grill last year for cooking burgers etc.
What to bring: Food! We ate well last year but food is a big part of the cost; the more you bring the cheaper it is for everyone. Nonetheless we'll have some main dishes provided.
Water is easy, we'll have several cases around. Still smart to bring some. Plan to keep any food contributions in your own cooler.